arm: mach-k3: fixup whitespace in SPDX License IDs

The SPDX ID format usese a single space used after the
'SPDX-License-Identifier:'. Fix all files that use any other white-space
character other than a single space.

Signed-off-by: Bryan Brattlof <bb@ti.com>

arm: mach-k3: Move R5 specific code into new r5/ directory

This makes it clear these are only to be used by the R5 builds of SPL.
And this will be used to later more cleanly split the two builds.

Signed-off-by: Andrew Davis <afd@ti.com>

arm: mach-k3: Move R5 specific code into new r5/ directory

This makes it clear these are only to be used by the R5 builds of SPL.
And this will be used to later more cleanly split the two builds.

Signed-off-by: Andrew Davis <afd@ti.com>